山药质量标准英文版
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1、山药质量标准英文版RhizomaDioscoreaeOppositae(山药,Shanyao)CommonYanmRhizomeCommonYanmRhizomeisthedriedrhizomeofDioscoreaoppositaThunb.(Fam.Dioscoreaceae).Thedrugiscollectedinwinterwhenthestemandleavesarewithered,cutoff,washedcleanandpeeledouterbarkandfibrousroots,andthendried.Alternatively,thelarge,straightand
2、driedrhizomeissorted,soakedincleanwateruntilnodrycorevisibleandsoftenedthoroughly,cuttwoendstosmoothplaneandrubbedonaboardtobecomecylindricalinshape,driedinthesun,finallypolished.ItisknownasuGuangShanyaoM(PolishedCommonYanmRhizome).DescriptionSubcylindrical,curvedorsomewhatflattened,1530cmlong,1.5-6
3、cmindiameter.Externallyyellowish-whiteorpaleyellow,longitudinallyfurrowedandwrinkled,andbearingfibrousrootscars,withoccasionalpatchesofbrownishcork.Textureheavy,compactandtough;uneasilybroken,fracturewhiteandstarchy.Odour,slight;taste,weak,acidulous,andviscousonchewing.GuangShanyaoiscylindrical,thet
4、woendseven,9T8cmlong,1.5-3cmdiameter,externallysmooth,whiteoryellowish-white.Identification(1)Powder:Whiteish.Simplestarchgranulescompressed-ovoid,deltoid-ovoid,subroundedoroblong,8-35Umindiameter,hilumpointed,V-shaped,crosscrissorshortlycleft,striationsvisible.Compoundstarchgranulesfew,usuallyconsi
5、stingof2-3granules.Mucilagecellscontainingraphidesofcalciumoxalate,upto240Umlongandneedlecrystals2-5Pmwide.Vesselsbordered-pitted,reticulated,spiralandannular,12-48Umindiameter.(2)Heatunderreflux5gofthepowderin30mlofdichloromethanefor2hours,filter,evaporatethefiltratetodryness,dissolvetheresidueinlm
6、lofdich1oromethaneasthetestsolution.Heatunderreflux5gofthedioscinin30mlofdich1oromethanefor2hours,filter,evaporatethefiltratetodryness,dissolvetheresidueinlmlofdichloromethaneasthereferencesolution.Carryoutthemethodforthinlayerchromatography(AppendixVIB),usingsilicagelGasthecoatingsubstanceandmixtur
7、eofacetidin,methanolandsrongammoniasolution(9:1:0.5)asthemobilephase.Applyseparatelytotheplate4U1ofeachoftheabovetwosolutions.Afterdevelopingandremovaloftheplate,dryinair.Spraywith10%solutionphosphomo1ybdicacidinethanol,andheattothespotsclear.Thespotinthechromatogramobtainedwiththetestsolutioncorrespondinpositioncolourtothespotinthechromatogramobtainedwiththereferencesolution.CheckingWatercontentNotmorethan16.0%(AppendixIXH,method1)TotalashNotmorethan4.0%(AppendixIXK)ExtractivesCarryoutthemethodfordeterminationofwatersolubleextractive(AppendixXA,themerceration),notlessthan7.0%.感谢您的阅读,祝您生活愉快。
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